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Old 02-12-2004, 07:08 PM   #1
Misel
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Registered: Mar 2003
Location: Berlin
Distribution: Slackware current
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Need a little PovRay help


Hello,

I need a little help in PovRay. I want to create an object based on something I only know the German word for it: "Rotationsparabolid".

I guess the least of you (and probably not even most of the Germans here) know what this means so here the explanation: It's a 3-dimensional object described by two quadratic functions (eg. z = f(x,y) = x + y )

My problem is that I know it's possible but I don't know how. I remember reading through the documentation a couple of years ago and there was a picture with several white "half eggs" neatly aligned. And those objects are what I am looking for.

Even if you don't know what I'm talking about but know a little about PovRay. Can you help me create an object with that certain formula given?

Tahnks in advance
-Misel
 
Old 02-13-2004, 01:22 AM   #2
IRIGHTI
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Registered: Oct 2003
Distribution: Slackware64 13.1 x86_64, Ubuntu 10.04 x86_64
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The only way I would know of would be to use the :

lathe{}

function and give it points on the parabola you need to revolve.
 
Old 02-13-2004, 06:07 AM   #3
Misel
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Location: Berlin
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Thank you but somebody on another forum pointed me to the right function. I need an iso-surface in order to accomblish my task
 
  


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